Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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一种改进的电网故障诊断解析模型研究

来源:电工电气发布时间:2017-11-17 09:17 浏览次数:3
一种改进的电网故障诊断解析模型研究
 
于雪雪1,2,杨文辉1,2,周红3
(1 三峡大学 电气与新能源学院,湖北 宜昌 443002;2 三峡大学 梯级水电站运行与控制湖北省重点实验室,湖北 宜昌 443002;
3 国网七台河供电公司,黑龙江 七台河 154600)
 
    摘 要:针对保护或断路器出现拒动条件下,保护期望动作状态计算结果与实际动作逻辑间可能出现失配的原因进行了分析。通过计及主保护、近后备保护、远后备保护和断路器失灵保护间相互制约关系,给出了一种电网故障诊断模型解析规则的改进方法。仿真算例表明,所提方法能够提高故障诊断模型目标函数的计算精度,获得更加合理的故障诊断结果。
    关键词:故障诊断;解析模型;继电保护;报警信息;电力系统
    中图分类号:TM773     文献标识码:A     文章编号:1007-3175(2017)11-0010-04
 
An Improved Analytical Model for Fault Diagnosis in Power Grid
 
YU Xue-xue1,2, YANG Wen-hui1,2, ZHOU Hong3
(1 College of Electrical Engineering and New Energy, Three Gorges University, Yichang 443002, China;
2 Hubei Key Laboratory of Cascaded Hydropower Stations Operation & Control, Three Gorges University, Yichang 443002, China;
3 State Grid Qitaihe Power Supply Company, Qitaihe 154600, China)
 
    Abstract: In allusion to the occurrence of misoperation in protective relays and circuit breakers, this paper analyzed the cause that the calculating results of expected action state mismatched the actual operation results of protective relays. By considering the mutual interaction relationship among main protection, near backup protection, far backup protection and circuit breakers failure protection, this paper gave the amended analytical rules of a kind of grid fault diagnosis model. Simulation examples show the proposed method may improve the calculation accuracy of object functions of fault diagnosis models, and thus obtain more reasonable fault diagnosis results.
    Key words: fault diagnosis; analytical model; protection relay; alarm information; power system
 
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